Backpack



FIG. 1 is a front perspective view of a backpack, showing my new designin a closed configuration;

FIG. 2 is a rear perspective view of FIG. 1;

FIG. 3 is a front elevational view of FIG. 1;

FIG. 4 is a rear elevational view of FIG. 1;

FIG. 5 is a left-side elevational view of FIG. 1;

FIG. 6 is a right-side elevational view of FIG. 1;

FIG. 7 is a top plan view of FIG. 1;

FIG. 8 is a bottom plan view of FIG. 1;

FIG. 9 is an exploded front perspective view thereof, illustrated in anopen configuration; and,

FIG. 10 is an exploded rear perspective view of FIG. 9.

The broken lines showing a logo in the figures depict environmentalmatter and form no part of the claimed design. The remaining brokenlines represent stitching, and are part of the claimed design.

CLAIM The ornamental design for a backpack, as shown and described.